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File containing the abstract ezcGraphMatrix class
| Copyright: | Copyright (C) 2005-2009 eZ Systems AS. All rights reserved. |
| License: | http://ez.no/licenses/new_bsd New BSD License |
| Version: | 1.5 |
| File Size: | 511 lines (14 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
ezcGraphMatrix:: (15 methods):
__construct()
fromArray()
init()
rows()
columns()
get()
set()
add()
diff()
scalar()
transpose()
multiply()
solveNonlinearEquatation()
LRdecomposition()
__toString()
Class: ezcGraphMatrix - X-Ref
Provides a genereic matrix class with basic math operations| __construct( $rows = 3, $columns = 3, array $values = null ) X-Ref |
| Constructor Creates a matrix with given dimensions. Optionally accepts an array to define the initial matrix values. If no array is given an identity matrix is created. param: int $rows Number of rows param: int $columns Number of columns param: array $values Array with values return: void |
| fromArray( array $values ) X-Ref |
| Create matrix from array Use an array with float values to set matrix values. param: array $values Array with values return: ezcGraphMatrix Modified matrix |
| init() X-Ref |
| Init matrix Sets matrix to identity matrix. return: ezcGraphMatrix Modified matrix |
| rows() X-Ref |
| Returns number of rows return: int Number of rows |
| columns() X-Ref |
| Returns number of columns return: int Number of columns |
| get( $i, $j ) X-Ref |
| Get a single matrix value Returns the value of the matrix at the given position param: int $i Column param: int $j Row return: float Matrix value |
| set( $i, $j, $value ) X-Ref |
| Set a single matrix value Sets the value of the matrix at the given position. param: int $i Column param: int $j Row param: float $value Value return: ezcGraphMatrix Updated matrix |
| add( ezcGraphMatrix $matrix ) X-Ref |
| Adds one matrix to the current one Calculate the sum of two matrices and returns the resulting matrix. param: ezcGraphMatrix $matrix Matrix to sum with return: ezcGraphMatrix Result matrix |
| diff( ezcGraphMatrix $matrix ) X-Ref |
| Subtracts matrix from current one Calculate the diffenrence of two matices and returns the result matrix. param: ezcGraphMatrix $matrix subtrahend return: ezcGraphMatrix Result matrix |
| scalar( $scalar ) X-Ref |
| Scalar multiplication Multiplies matrix with the given scalar and returns the result matrix param: float $scalar Scalar return: ezcGraphMatrix Result matrix |
| transpose() X-Ref |
| Transpose matrix return: ezcGraphMatrix Transposed matrix |
| multiply( ezcGraphMatrix $matrix ) X-Ref |
| Multiplies two matrices Multiply current matrix with another matrix and returns the result matrix. param: ezcGraphMatrix $matrix Second factor return: ezcGraphMatrix Result matrix |
| solveNonlinearEquatation( ezcGraphMatrix $matrix ) X-Ref |
| Solve nonlinear equatation Tries to solve equatation given by two matrices, with assumption, that: A * x = B where $this is A, and the paramenter B. x is cosnidered as a vector x = ( x^n, x^(n-1), ..., x^2, x, 1 ) Will return a polynomial solution for x. See: http://en.wikipedia.org/wiki/Gauss-Newton_algorithm param: ezcGraphMatrix $matrix B return: ezcGraphPolygon Solution of equatation |
| LRdecomposition() X-Ref |
| Build LR decomposition from matrix Use Cholesky-Crout algorithm to get LR decomposition of the current matrix. Will return an array with two matrices: array( 'l' => (ezcGraphMatrix) $left, 'r' => (ezcGraphMatrix) $right, ) return: array( ezcGraphMatrix ) |
| __toString() X-Ref |
| Returns a string representation of the matrix return: string |
| Generated: Thu Jul 28 15:48:31 2011 | Cross-referenced by PHPXref 0.7 |